// Copyright 2022 Ant Group Co., Ltd.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#pragma once

#include <cstdint>
#include <string>

namespace yacl::io {

class MmappedFile {
 public:
  explicit MmappedFile(const std::string &path);
  ~MmappedFile();

  const char *data() const { return static_cast<const char *>(data_); }

  size_t size() const { return size_; };

 private:
  void *data_{nullptr};
  std::uintmax_t size_{0};
};

}  // namespace yacl::io
